JP3104465B2 - IC handler - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention
This is for an IC handler that is supplied to a testing machine and automatically sorts and stores the data according to test results.

[0002]

2. Description of the Related Art An alarm judging method of a driving means in a conventional IC handler will be described with reference to FIG. FIG.
Is a configuration perspective view of a driving means of a general IC handler.
11 is a cylinder, 12A is a sensor for detecting cylinder push, 12B is a sensor for detecting cylinder pull, 13
Denotes an IC, 14 denotes a rail, 15 denotes a pusher, and 16 denotes a storage box.

In FIG. 3, an IC 1 placed on a rail 14
In order to store 3 in the storage box 16, the cylinder 11 is pushed and the completion of the cylinder operation is detected by the sensor 12A, and an alarm is determined. When the sensor 12A detects that the operation of the cylinder 11 has been completed, the pusher 15 is pressed, and the IC 13 is stored in the storage box 16.

However, 5 seconds after the cylinder 11 is pushed,
Even if the operation limit time of 10 seconds elapses, the sensor 12A
If it is not detected that the operation of the cylinder 11 has been completed, the pusher 15 is not pressed and the IC 13 is not stored in the storage box, so that an alarm is determined, the IC handler including the cylinder is stopped, and an alarm message is displayed on the display means. .

[0005]

In the conventional alarm judging method, no alarm is generated when the operation time of the cylinder 11 is close to the operation limit time at which the alarm is generated.
For example, in a cylinder with a normal operation time of 1 second,
When the operation time is 4 seconds, a loss of 3 seconds per one operation of the cylinder 11 occurs within the operation limit time. Further, when the operation time of the cylinder 11 is extended and the operation limit time is passed, an alarm is generated, the IC handler is stopped, and the IC handler cannot be operated until the alarm is released. became.

According to the present invention, when the operation time of the cylinder is within the operation limit time but outside the range of the normal operation time, an alarm of the cylinder is predicted, and the IC is issued by the alarm.
An object of the present invention is to provide an IC handler capable of outputting the number of occurrences of alarm prediction to a display without stopping the handler and reducing time loss.

[0007]

In order to achieve this object, the present invention provides a driving means for conveying ICs,
Position detecting means 3 for detecting the completion of the operation of the driving means 2, CPU 1 for controlling the driving means 2, display means 4 for displaying the number of occurrences of alarm prediction, and storage means 5 for storing driving parameters of the driving means 2; Measuring means 1B for measuring the operation time of the driving means 2 in the IC handler provided with
When the operation time is within the predetermined operation limit time but outside the range of the normal operation time written in the storage means 5, without stopping the driving means 2,
A control determining means 1A for increasing the number of occurrences of alarm prediction by one and supplying the same to the display means 4 is provided in the CPU 1.

[0008]

In the present invention, the CPU 1 operates the driving means 2 and inputs the completion of the operation from the position detecting means 3 to the driving means 2.
Is measured, and if it is out of the range of the normal operation time written in the storage means 5, the number of occurrences of alarm prediction is increased by +1 without stopping the IC handler, and the display means 4
To be displayed.

[0009]

FIG. 1 shows the configuration of an embodiment of an IC handler with an alarm prediction display according to the present invention. 1 in FIG.
Denotes a CPU, 2 denotes a driving unit, 3 denotes a position detecting unit, 4 denotes a display unit, and 5 denotes a storage unit. The driving means 2 corresponds to the cylinder 11 shown in FIG. The position detecting means 3 is a sensor 1
2A and the sensor 12B. The storage means 5 is, for example, R
The drive parameters such as the normal operation time range and the operation limit time of the cylinder are written in advance in the address of the storage means 5 using AM or the like.

The CPU 1 has a control determining means 1A and a time measuring means 1B, and controls the operation of the driving means 2 by the control determining means 1A. The time measuring means 1B includes the driving means 2
The operation time is measured from when the operation is performed until the position detection means 3 detects the completion of the operation. The measured time is input to the control determining means 1A. If the measured time is out of the range of the normal operation time written in the storage means 5 in advance, the prediction of the alarm is determined and the IC handler is stopped without stopping. The number of occurrences of alarm prediction is increased by +1 and displayed on the display means 4. FIG. 4 shows a display screen according to the embodiment of the present invention, in which the number of occurrences of alarm prediction is displayed.

Next, the operation of FIG. 1 will be described with reference to the flowchart of FIG. In step S1 of FIG. 2, the operation limit time and the normal operation time range of the cylinder 11 are written in the storage unit 5 in advance. If the IC handler is operating in step S2, the process proceeds to step S3, in which the CPU 1 drives the cylinder 11 by the control determining means 1A and starts measuring time by the time measuring means 1B.

In step S4, it is checked whether the time measured is longer than the operation limit time written in the storage means 5. If shorter, the process proceeds to step S5, where the sensor 12A determines that the operation of the cylinder 11 has been completed. Step 4 and step S5 are repeated while confirming whether or not detection has been performed.

In step S5, the sensor 12 is
If the operation completion is detected, the process proceeds to step S6, where CP
In step S7 in which the time measuring means 1B of U1 obtains the operating time of the cylinder 11, it is checked whether the obtained operating time is within the range of the normal operating time previously written in the storage means 5, and if it is within the range. The control determination means 1A of the CPU 1 determines that the operation is normal, returns to step S2, and repeats the operation while the IC handler is operating.

If the operation time obtained in step S7 is out of the range of the normal operation time, the control judgment means 1A of the CPU 1 judges the alarm prediction, and in step S11,
The number of occurrences of alarm prediction is increased by +1 on the display means 4 and displayed, and the process returns to step S2, while the IC handler is operating.
Repeat the operation.

At step S4, if the time measured by the time measuring means 1B of the CPU 1 is longer than the operation limit time, the control judging means 1A judges an alarm, stops the IC handler at step S8, and at step S9. The operation failure alarm is displayed on the display means 4, and the process waits until the alarm is cleared in step S10. When the alarm is cleared, the process returns to step S3 to continue the operation.

[0016]

According to the present invention, when the operation time of the driving means is out of the range of the normal operation time, the abnormality of the driving means can be detected without stopping the IC handler. , Time loss is reduced. For example, if a cylinder with a normal operation time of 1 second operates in 4 seconds, a loss of 3 seconds will occur per cylinder operation, but if a defective cylinder is detected and adjusted to operate in 1 second, a loss of 3 seconds will occur. Can be eliminated.

[Brief description of the drawings]

FIG. 1 is a configuration block diagram of an embodiment of the present invention.

FIG. 2 is a flowchart showing the operation of FIG.

FIG. 3 is a configuration perspective view of a driving unit of the IC handler.

FIG. 4 is a display screen according to the embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 CPU 1A Control determination means 1B Time measurement means 2 Driving means 3 Position detection means 4 Display means 5 Storage means

Claims (1)

(57) [Claims] A driving means for transporting an IC; a position detecting means for detecting completion of operation of the driving means; a CPU for controlling the driving means; In an IC handler having a display means (4) for displaying the number of prediction occurrences and a storage means (5) for storing a drive parameter of the drive means (2), a time for measuring the operation time of the drive means (2) Measuring means (1B)
When the operation time is within the predetermined operation limit time but outside the range of the normal operation time written in the storage means (5), without stopping the driving means (2),
Display means for increasing the number of occurrences of alarm prediction by one
(4) An IC handler characterized in that a control determining means (1A) to be supplied to (4) is provided in the CPU (1).